Fastener for papers and other materials



C. P. SIBLEY. FASTENER FOR PAPERS AND OTHER MATERIALS.

APPLICATION FILED NOV. 10, I920.

Patented Nov. 22, 1921.

UNITED STATES CEIDRIG PUTNAM SIBLEY,

OF DETROIT, MICHIGAN.

'IEASTENER FOR PAPERS AND OTHER MATERIALS.

Application filed November 10, 1920, Serial No. 423,143.

To all whom it may concern:

Be it known that I, Cnniuo PUTNAM SIBLEY, a citizen of the UnitedStates, residing at Detroit, in the county of Wayne and State ofMichigan, have invented a certain new and useful Improvement inFasteners for Papers and other Materials, of which the following is afull, clear, and exact description.

This invention relates to a paper fastener of the self-piercing typerepresented in the well-known Challenge eyelet, which is manufacturedunder the patent to Edward L. Sibley, No. 358,225, datedcFebruary 22,1887. It is desirable, in some cases, to mechanically feed and set suchfasteners, but those, like the Challenge, which have a tubular barrel donot readily conform to feeding mechanism.

It is the object of the present invention to provide a self-piercingfastener which lends itself readily to use on or in connection with afeeding mechanism, without sacrificing any of the advantages of thistype of fastener and still retaining its facility of removal.

The invention consists of a fastener, for use in connecting a pluralityof sheets of paper or other material, having a substantially rectangularbarrel iortion which may be and is here shown as a apted to be driventhrough the material to be fastened, and also having terminal flanges atits end opposite its driven end; these flanges being capable of beingreverted in order to remove a set fastener when desired; theconstruction being such that the individual fasteners or series of suchfasteners connected in a strip, may be placed in a clip or holder orraceway or magazine of a setting machine and fed by gravity or otherwiseto the settingtools; and in, case of the strip form of fasteners, meansmay be provided for severing the successive fasteners as they arepresented for setting; and as an alternative the fastener may be formedin the act of setting, as I will proceed now to explain and finallyclaim.

In the accompanying drawings illustrating the invention, in the severalfigures of which like parts are similarly designated, Figure 1 is aerspective view of one form of fastener. ig. 2 is a plan View of aportion of a blank, from which such fastener may be made. Fig. 3 is aperspective View of a strip of connected fasteners. Fig. 4 1sSpecification of Letters Patent.

Patented Nov. 22, 1921.

a sectional elevation illustrating the first operation in setting thefastener on pieces of paperor other material. Fig. 5 is a similar viewshowing the second operation, and Fig. 6 represents the final settingoperation. Fig. 7 is a perspective view of another form of fastener;Fig. 8 is a plan view of a'portion of a blank from which it may be made;Fig. 9 is a perspective view of a strip of such-fasteners; and Figs. 10,11 and 12 are elevations representing the three steps of settingthefastener. Figs. 13, 14c and 15 are-diagrammatic elevations illustratinganother form of the invention in which the fastener is formed in situfrom a flat strip of metal and set in a series of successive operations.

Referring to that form of the invention illustrated in Figs. 1 to 6inclusive, the fas tener has the substantially rectangular barrel l, thesides of which are substantially parallel, with the closed end 2, theopen end 3 and the lateral flanges 4 on opposite sides of said open end.This fastener may be made in a variety of ways, either singly or instrips. For example, the flat strip 5, Fig. 2, may be cut crosswise fromboth sides nearly-to the center, as represented by the lines 6 and 7, soas to leave an unsevered portion 8 which serves to hold the fasteners instrip form, and ,then said strip is diepressed or otherwise formed intoa substanlirially inverted U-shape, as represented in When thusmanufactured, the fasteners are adapted for use in a machine having anautomatic or 'other feed, such as clips, raceways or magazines, bywhich, the fasteners are successively fed one by one to the settingmechanism and severed as individually delivered.

As shown in Figs. 4, 5 and 6, fasteners of the character described areadapted to be driven through the material to be fastened, withoutprevious perforation of the material, the barrel 1 being driven throughthe material in the direction of its closed end 2 until the flanges fabut against the back of the material, and then, by means of suitablesetting dies or tools, this barrel is collapsed, as indicated in Fig. 5,and finally flattened down or extended out laterally, substantiallyparallel with the flanges and with the face if the material to befastened, as indicated in Instead of manufacturing the fastener notchesisbent up to form the parallel-sided barrel 11, Fig. 9. The otherelements of this fastener. are in general the same as previouslydescribed and are so designated, Thls construction also lends'itselfreadlly to a feeding mechanism in a setting machine,-

where provision ismade for driving the barrel through the material to befastened, as indicated in Fig. 1 (),and then collapsing it, as indicatedin Fig. 11, and finally flatten- 'ing it down, as in Fig. 12, the stripbeing severed on the lines of the notches as each individual fastener isdriven through the material to be fastened.

As a furtherillustration of my invention, reference is made to theconstruction shown in Figs. 13, 14: and 15, wherein aflat strip of metal12, unsevered,or partly severed as in Fig. 8, is wound on a spool 13 andfed.

thence to suitable forming tools, comprising a pin 14: and a die 15,with the material 16 to be fastened superposed upon the strip. Upon thedescent of the die, the strip of metal is drawn from. the spoolover thepin and forced through the material to be fastened, as shown in Fig. 14,anda fastener length severed by means of the complemental shearingblades 17 and thereupon, upon further movement of the die, therectangular formation of the fastener is completed, as shown in Fig. 15after which the barrel may be collapsed, as indicated in either Figs. 41to 6 or 10 to 12.

In any case, the fastener may be removed from the. fastened material byreverting the flanges, as indicated by dotted lines in Fig. 6, andpulling it out in the direction of arrow 18, Fig. 6, without marring thematerial.

I have thus described a number of different ways of carrying out theprinciple of the invention, but wish it to beunderstood that I realizethat the invention'is susceptible offurther variations within the scopeof the'claims following. a p

In. all of the forms of the fastener herein on said sides, the fastenerbeing open on the i other sides and the bottom. Thus the fas- :in theclip or raceway, and the open sides adjust them to the setting tools.

lVhile for convenience I have referred to myinvention as a paperfastener, it is to be'understood, also, that the fastenermay be used forfastening material other than paper, and consequently the claims will beunderstood asnot limited to the use of the invention for fasteningsheets of paper.

hat I claim is l ,7 r r 1. A paper. fastener, composed of a strip ofmetal bent transversely into substantially rectangular form, and havinga closed leading end and'an open end, said closed'end adapted to bepassed through the material to be fastened, and a'pair of parallel sidesterminating in laterally extended flanges next to the open end, theother sides being open. 1

2.- A paper fastener, made from a flat narrow strip of metal bent in themiddle transversely, thereby forming substantially paral-' lel and flatsideswhich constitute the selfpiercing element of the fastener, theedges of said sides being in alinement and parallel, and the endsthereof bent outwardly to form the flange or base of the fastener, theother sides and the end next tothe flange being open. 7 1

3. A paper fastener, in strip form, having a closed end barrel adaptedto be driven .through the material to be fastened, and bottom flanges,severed from the strip in the act of setting. r

4. Paper fasteners of substantially inverted U-shape arranged in stripform to facilitate their use in a fastener setting machine, the stripbeing partially severed transversely to individualize the fasteners andprovide for their separation from the strip one by one i 1 In testimonywhereof I have hereunto set my hand this eighth day of November, A. D.1920.

CEDRIC PUTNAM Witnesses ANNA PEARL SWEET, GRACE MASTERS.

sIBLEYf

